To dream of a bear and to feel frightened by it, or to witness a bear behaving in a wild, unpredictable, uncontrollable manner could be more about yourself or your own behavior than about anything else (via Huffington Post). Have you recently had a "bear of a day?" Sometimes just that word association can go a long way in our subconscious into creating tangible imagery in our dreams. Have you recently behaved in a way that felt uncontrolled, raging, animalistic, or otherwise out of character? 

"A bear figuring prominently in your dream will indicate a compulsive way of thinking, speaking or acting that probably contributed to a 'bear of a day,'" dream expert Barbara Condron tells the publication. "Dream messages are like conversations ... They are feedback on the dreamer's previous day's experience," she explains. When asked how someone could prevent dreaming about bears if these dreams frighten them, she replied, "It's best to receive the message your subconscious mind offers." 

In other words, if the bear in your dream is upsetting or frightening you, it is probably a loud sign from your subconscious that something in your own behavior needs to be acknowledged and dealt with.